While the significance of corpus-based research in the teaching of foreign language and native language is increasing, the need for such studies is also increasing accordingly. The priority of the vocabulary taught in language education are identified through corpus-based studies in line with the international criteria set in the relevant field. Corpora and sub-corpora consisting of many layers, written and oral, improve the efficiency of the teaching/learning process for both teachers and learners. Corpus-based studies aiming to create word lists to be taught at the basic level are significant in this context to meet the needs of learners and teachers. In this study, 7 different A1 level textbooks and about 114-thousand-word data set used in teaching Turkish as a foreign language were examined based on the relevant corpus, and the type/token ratios of the sub-corpus were identified. The most frequently used words in A1 corpus in the field of Turkish teaching as a foreign language are classified according to their types. Frequency lists of the words that are considered to be functional and useful in the teaching of Turkish as a foreign language for both teachers and learners have been prepared; 250 most frequently used nouns, adjectives and verbs; 750 different words, which are considered to be a fairly comprehensive number for the basic level, are presented as suggestions within the scope of this study.